I know some people here have said they have had success with the method because it gives a measured dose of water and you can't overwater. But for others the cold has stressed the plant and/or it's just not been enough water. I think it depends on your enviroment, I wouldn't do it myself here in the cold UK watering with luke warm water is better here.
You said you purchased 'another' orchid, so if you have grown others in the past successfully I would say continue doing what you did with that/those. It's a gimmick even if it does work for some.
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